A drain pipe is manufactured from a cement mixture which comprises cement 20-30 weight percent, sand 30-40 weight percent, broken-stone chip 31-45 weight percent in 4-20 mm size, admixture 0.2-0.3 weight percent, and functional additives. The functional additives shall be added and mixed additionally. The functional additives include PUD (Waterborne Polyurethane Dispersion) 10-15 weight percent, PVA (Polyvinyl Alcohol) fiber 4-8 weight percent in 2-3 mm size, MEHEC (methylethylhydroxyethylcelluloe) 2-4 weight percent, calcium carbonate 4-6 weight percent, degenerated silicate 2-4 weight percent, epoxy group emulsion 1-2 weight percent, fluorosilicate magnesium 1-2 weight percent, cyclopentasiloxane 1-2 weight percent, triglycerides 6-10 weight percent, glycidyl neodecanoate 2-4 weight percent, sodium, acrylate copolymer 2-4 weight percent and dichlorodimethylsilane 3-6 weight percent, and water for remaining portion based on cement 100 weight percent.

A method of impregnating a fiber texture of hollow shape, the method including introducing a first suspension containing a first powder of solid particles of ceramic or carbon material into an inside volume defined by an inside face of a fiber texture of hollow shape placed in a mold, an outer face of the fiber texture being presented facing a wall of the mold; and using the action of centrifugal force to impregnate the fiber texture with the first suspension by causing the mold to rotate and varying the speed of rotation of the mold during the impregnation of the texture with the first suspension.